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109 lines
3.5 KiB
109 lines
3.5 KiB
/* |
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* Copyright (c) 2016 Hisilicon Limited. |
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* |
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* This software is available to you under a choice of one of two |
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* licenses. You may choose to be licensed under the terms of the GNU |
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* General Public License (GPL) Version 2, available from the file |
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* COPYING in the main directory of this source tree, or the |
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* OpenIB.org BSD license below: |
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* |
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* Redistribution and use in source and binary forms, with or |
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* without modification, are permitted provided that the following |
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* conditions are met: |
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* |
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* - Redistributions of source code must retain the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer. |
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* |
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* - Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials |
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* provided with the distribution. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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*/ |
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#include <linux/platform_device.h> |
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#include <linux/pci.h> |
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#include <rdma/ib_addr.h> |
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#include <rdma/ib_cache.h> |
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#include "hns_roce_device.h" |
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static inline u16 get_ah_udp_sport(const struct rdma_ah_attr *ah_attr) |
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{ |
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u32 fl = ah_attr->grh.flow_label; |
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u16 sport; |
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if (!fl) |
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sport = get_random_u32() % |
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(IB_ROCE_UDP_ENCAP_VALID_PORT_MAX + 1 - |
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IB_ROCE_UDP_ENCAP_VALID_PORT_MIN) + |
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IB_ROCE_UDP_ENCAP_VALID_PORT_MIN; |
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else |
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sport = rdma_flow_label_to_udp_sport(fl); |
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return sport; |
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} |
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int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr, |
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struct ib_udata *udata) |
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{ |
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struct rdma_ah_attr *ah_attr = init_attr->ah_attr; |
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const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr); |
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struct hns_roce_dev *hr_dev = to_hr_dev(ibah->device); |
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struct hns_roce_ah *ah = to_hr_ah(ibah); |
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int ret = 0; |
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if (hr_dev->pci_dev->revision <= PCI_REVISION_ID_HIP08 && udata) |
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return -EOPNOTSUPP; |
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ah->av.port = rdma_ah_get_port_num(ah_attr); |
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ah->av.gid_index = grh->sgid_index; |
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if (rdma_ah_get_static_rate(ah_attr)) |
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ah->av.stat_rate = IB_RATE_10_GBPS; |
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ah->av.hop_limit = grh->hop_limit; |
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ah->av.flowlabel = grh->flow_label; |
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ah->av.udp_sport = get_ah_udp_sport(ah_attr); |
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ah->av.sl = rdma_ah_get_sl(ah_attr); |
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ah->av.tclass = get_tclass(grh); |
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memcpy(ah->av.dgid, grh->dgid.raw, HNS_ROCE_GID_SIZE); |
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memcpy(ah->av.mac, ah_attr->roce.dmac, ETH_ALEN); |
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/* HIP08 needs to record vlan info in Address Vector */ |
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if (hr_dev->pci_dev->revision <= PCI_REVISION_ID_HIP08) { |
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ret = rdma_read_gid_l2_fields(ah_attr->grh.sgid_attr, |
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&ah->av.vlan_id, NULL); |
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if (ret) |
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return ret; |
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ah->av.vlan_en = ah->av.vlan_id < VLAN_N_VID; |
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} |
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return ret; |
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} |
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int hns_roce_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr) |
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{ |
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struct hns_roce_ah *ah = to_hr_ah(ibah); |
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memset(ah_attr, 0, sizeof(*ah_attr)); |
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rdma_ah_set_sl(ah_attr, ah->av.sl); |
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rdma_ah_set_port_num(ah_attr, ah->av.port); |
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rdma_ah_set_static_rate(ah_attr, ah->av.stat_rate); |
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rdma_ah_set_grh(ah_attr, NULL, ah->av.flowlabel, |
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ah->av.gid_index, ah->av.hop_limit, ah->av.tclass); |
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rdma_ah_set_dgid_raw(ah_attr, ah->av.dgid); |
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return 0; |
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}
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